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view stripeMatrixPeriodic.m @ 1083:a22b23098021 feature/laplace1dUpdate

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Divide interface penalty strength by 4, to make it sharp. Stability verified by eigenvalue computations.
author Martin Almquist <malmquist@stanford.edu>
date Tue, 05 Mar 2019 12:41:50 -0800
parents bbf303c1f0cf
children
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% Creates a periodic discretization matrix of size n x n
%  with the values of val on the diagonals diag.
%   A = stripeMatrix(val,diags,n)
function A = stripeMatrixPeriodic(val,diags,n)

    D = ones(n,1)*val;
    A = spdiagsPeriodic(D,diags);
end